EP1788305B1 - Brennkammerbaugruppe für einen Verdampferbrenner - Google Patents

Brennkammerbaugruppe für einen Verdampferbrenner Download PDF

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Publication number
EP1788305B1
EP1788305B1 EP06019098.0A EP06019098A EP1788305B1 EP 1788305 B1 EP1788305 B1 EP 1788305B1 EP 06019098 A EP06019098 A EP 06019098A EP 1788305 B1 EP1788305 B1 EP 1788305B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
evaporator medium
porous evaporator
receiving piece
ignition member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06019098.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1788305A1 (de
Inventor
Oliver Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
Eberspaecher Climate Control Systems GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eberspaecher Climate Control Systems GmbH and Co KG filed Critical Eberspaecher Climate Control Systems GmbH and Co KG
Priority to PL06019098T priority Critical patent/PL1788305T3/pl
Publication of EP1788305A1 publication Critical patent/EP1788305A1/de
Application granted granted Critical
Publication of EP1788305B1 publication Critical patent/EP1788305B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/40—Burners using capillary action the capillary action taking place in one or more rigid porous bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/06—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners
    • F23Q7/08—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners for evaporating and igniting liquid fuel, e.g. in hurricane lanterns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00016—Preventing or reducing deposit build-up on burner parts, e.g. from carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/05002—Use of porous members to convert liquid fuel into vapor

Definitions

  • the present invention relates to a combustion chamber assembly for an evaporator burner, as used for example in a vehicle heater, according to the preamble of claim 1.
  • Such from the EP 1 363 070 A1 known combustion chamber assembly has a substantially pot-like and a combustion chamber delimiting combustion chamber housing.
  • On a wall of this combustion chamber housing generally a peripheral wall of the same, at least one Zündorganingansatz is provided, which is lined on its inside with a porous evaporator medium.
  • a Brennstoffzumol To be able to feed fuel into this porous evaporator medium, a Brennstoffzumol slaughterhouse, such a fuel receiving approach to an air inlet opening. This lies in the end region of such a Zündorganingansatz, which is located the connection to the wall of the combustion chamber housing.
  • the air required for ignition is conveyed into such an air inlet opening by a blower, which also promotes the required for the normal combustion and fed into the combustion chamber air.
  • a blower which also promotes the required for the normal combustion and fed into the combustion chamber air.
  • the DE 43 28 790 A1 shows a combustion chamber assembly with a pot-like combustion chamber housing.
  • a region of the peripheral wall and a ring-like region of the bottom wall are covered by a porous evaporator medium.
  • air inlet openings are provided in the bottom wall and in the peripheral wall of the combustion chamber housing. Air flowing through it passes through the porous evaporator medium or through openings provided in the porous evaporator medium into a combustion chamber.
  • an ignition member is provided in an ignition member receiving lug adjacent to a peripheral wall of the combustion chamber housing.
  • this object is achieved by a combustion chamber assembly for an evaporator burner, in particular for a vehicle heater, according to claim 1.
  • At least one air inlet opening is not in a range in which no porous evaporator medium is present, but that the air inlet opening is basically covered by the porous evaporator medium and even in this porous evaporator medium further into the interior of the Zündorganingansatzes Passage opening is provided. That is, even if liquid or vaporized fuel enters this area of the air feed, it will not directly contact the material of the ignition organ receiving itself, but will generally only come into contact with the porous evaporator medium. If deposits are formed in this area, it will be easily possible to burn off the same by very strong heating by means of the ignition device in the Zündorganingansatz.
  • the porous evaporator medium is closer to the ignition device.
  • the thermal mass of the porous evaporator medium is significantly lower and its thermal conductivity also reduced, especially if it does not rest over its entire outer circumference on Zündorganinganthesis.
  • the heat supplied by the ignition device can thus be used efficiently to burn off any deposits that may be formed.
  • at least one air inlet opening can be dimensioned arbitrarily or too large in the Zündorganingansatz in itself, so that it is suitable for different design types of such a combustion chamber assembly.
  • the actual inlet cross-section is defined defined by the air passage opening provided in the porous evaporator medium in association with such an air inlet opening, which has a smaller passage cross-section, as the air inlet opening assigned to it. This means that a throttle point is created by the passage opening in comparison to the passage cross section of the air inlet opening. It should nevertheless be pointed out that even if, for example, the air passage opening provided in the porous evaporator medium provides approximately the same dimension or the same passage cross-section as the air inlet opening, it is also ensured that deposits possibly generated on the inside are in the region of be located much easier to heat porous evaporator medium.
  • At least one air inlet opening is designed to extend in a ring-like manner over the circumference of the ignition element receiving projection, wherein preferably such an annular opening can extend at least over an angular range of 180 °.
  • the porous evaporator medium is at least in the area surrounding the at least one air inlet opening at a distance from an inner surface of the Zündorganitsatzes.
  • an advantageous development of the invention may be characterized by a arranged after the porous evaporator medium in the Zündorganingansatz and on an inner surface of the Zündorganingansatzes fitting end element. In this way, an undefined inflow of the combustion air is avoided, bypassing the porous evaporator medium.
  • combustion chamber assembly according to the invention can be constructed such that the at least one air inlet opening in the Zündorganingansatz with respect to a longitudinal direction thereof is arranged radially.
  • combustion chamber assembly 10 is a combustor assembly for a vehicle heater.
  • This illustrated in cross-section combustion chamber assembly 10 includes a combustion chamber housing 12 which is formed with an example substantially circular cylindrical peripheral wall 14 and a bottom wall 16.
  • the bottom wall 16 may be integrally formed with the peripheral wall 14 and formed therewith to provide an integral combustor housing 12 in a manufacturing operation, generally using a casting process for manufacturing.
  • the substantially pot-shaped combustion chamber housing 12 defines a combustion chamber 18 with its peripheral wall 14 and its bottom wall 16.
  • an ignition element receiving lug 20 is provided on the combustion chamber housing 12, namely here the circumferential wall 14.
  • This lateral approach is approximately tangential to the peripheral wall 14 and is preferably integrally formed with this, so also forms an integral part of the metal-made combustor 12.
  • this approach 20 based on its longitudinal direction, for example, be designed substantially circular cylindrical.
  • a possibly provided on the bottom wall 16 combustion air inlet nozzle which may be formed approximately parallel to the peripheral wall 14 extending in a central region of the bottom wall 16 and projects into the combustion chamber 18 to feed combustion air into the combustion chamber 18 via a plurality of slot-like openings formed therein ,
  • a porous evaporator medium 22 is provided on the inside of the peripheral wall 14. This preferably dresses the peripheral wall 14 in its entire peripheral region and approximately in the entire extension region of the combustion chamber 18 from. This porous evaporator medium 22 can receive liquid fuel, distribute it by Kapillarrant Angel in its internal volume range and then evaporate at the surface exposed to the combustion chamber 18 toward.
  • a porous evaporator medium 24 is provided, which is where the projection 20 in its first end portion 26 connects to the peripheral wall 14, in contact with the porous evaporator medium 22.
  • the approach 20 further opens a fuel supply 28, in a region in which the projection 20 is lined with the porous evaporator medium 24. Liquid fuel is thus fed via the line 28 into the batch 20 and there into the porous evaporator medium 24.
  • the evaporator medium 24 provides a Kapillar tone bin so that it on the one hand distributed from the line 28 liquid fuel in its interior volume range and thus distributed over the circumference of the neck 20, on the other hand, but also due to the connection to the porous evaporator medium 22 in the combustion chamber 18 fuel in this porous evaporator medium 22 introduces further distribution therein and for evaporation in the combustion chamber 18th
  • the projection 20 is closed by a closure element 32.
  • An ignition member 34 such as a glow plug, is carried on this closure member 32 or a separate carrier and extends approximately centrally into the boss 20. Via a connecting line 36, the ignition device 34 can be energized, so that by heating the same in the region of the projection 20 so high temperatures can be generated that a mixture contained therein of evaporated fuel and air can be ignited and thus the combustion in the combustion chamber housing 12 are started can.
  • the air required for the ignition in particular in the inner region of the projection 20, is fed directly into this Zündorganingansatz 20.
  • this has at the second end portion 30 in the in Fig. 1 illustrated embodiment, an air inlet opening 38.
  • the air inlet opening 38 is positioned there on the projection 20, where it is still lined on its inside with the porous evaporator medium 24. That is, the evaporator medium 24 extends from the first end portion 26 and thus the connection to the porous evaporator medium 22 substantially over the entire length of the projection 20 to the second end portion 30 and so far that the air inlet opening 38 is basically still detected or is covered.
  • an air passage opening 40 is also provided in the porous evaporator medium 24.
  • the air required to ignite the fuel vaporized via the porous evaporator medium 24 into the interior volume region of the projection 20 can thus pass through the air inlet opening 38 and the air passage opening 40 into the projection 20, where it mixes with the fuel vapor in the region surrounding the ignition element 34 and then be ignited upon excitation of the ignition device 34.
  • the resulting flame or combustion will then extend or spread over an opening 42 in the porous evaporator medium 22 into the region of the combustion chamber 18 and also lead there to the start of the combustion.
  • the limitation on the amount of ignition air actually to be made for a particular intended type is realized by the size selection for the passage opening 40 in the porous evaporator medium 24.
  • a high flexibility in the specification or adjustment of the amount of ignition air taking into account the fact that the ignition air is conveyed together with the combustion air by the same blower.
  • FIG. 2 A modified embodiment is in Fig. 2 shown.
  • the basic structure of the combustion chamber assembly 10 and the combustion chamber housing 12 corresponds to the above-described.
  • a connection region 44 extending between the peripheral wall 14 and the lug 20 can be provided, which extends approximately over the entire length of the lug 20 extends and may also form an integral part of the housing 12.
  • the opening 38 may be interrupted in the circumferential direction. However, the opening 38 extends over a peripheral region of at least 180 °, preferably almost 360 °, with the result that even in the positioning of the air passage opening 44 in the circumferential direction or a plurality of such air passage openings 44 greater freedom exists.
  • One of the principles of embodiments of the Fig. 1 and 2 merging embodiment could provide over the circumference, possibly also distributed in the longitudinal direction of the projection 20 to provide a plurality of discrete air inlet openings 38. Depending on the amount of ignition air required, one or more air passage openings 40 can then be provided in the porous evaporator medium 24 in association with one, several or all such openings 38.
  • a non-inventive combustion chamber assembly 10 is shown. This basically corresponds to the structure of Fig. 2 , However, has the difference that where in the projection 20 of the air inlet opening 38 is formed in the porous evaporator medium 24, no air passage opening is present. That is, the porous evaporator medium 24, which thus completely covers or closes the air passage opening 38, allows the air passage due to its porosity. Here, therefore, the total passage cross-section is essentially defined by the opening size of the air inlet opening 38.
  • the air can then pass through the pores of the porous evaporator medium 24 into the interior region of the Zündorganingansatzes 20 under the conveying effect of the air supply blower provided for this purpose and thus constructed. Since the throttling effect of the porous evaporator medium 24 is known, it is easy, taking account of its porosity, to design the size of the opening 38 so that the desired amount of ignition air can flow into the projection 20 at the intended delivery capacity of the air blower.
  • this embodiment can also be combined with the in Fig. 1 illustrated embodiment. That is, even a plurality of discrete air inlet openings 38 can each be completely covered with the porous evaporator medium 24. It is also possible to combine these two variants, so that, for example, a part of the air inlet openings 38 is completely covered with the porous evaporator medium 24, while in association with another Part of an opening 40 is present, as in the Fig. 1 and 2 is recognizable.
  • the porous evaporator medium 24 abuts against an inner surface 46 of the Zündorganingansatzes 20 at least in the area surrounding the air inlet opening 38. This has the consequence that there is no space between the porous evaporator medium 24 and the Zündorganingansatz 20, in particular in the region of the air inlet opening 38. That is, the air conveyed through the air inlet opening 38 forcibly there either by a passage opening 40 and / or through the Pores of the porous evaporator medium 24 must pass.
  • a ring-like gap 48 is formed, at least in that area which is close to the second end portion of the projection 20 or where the air inlet opening 38 is provided ,
  • the air passing through this air inlet opening 38 can also reach the intermediate space 48.
  • a closing element 52 is provided adjacent to the end region 50 of the porous evaporator medium 24 located in the second end region 30 of the projection 20.
  • This may for example be formed integrally with the closure element 32 and may, for example or alternatively, be effective as a carrier of the ignition device 34.
  • the end element 52 abuts on the one hand with its outer circumference on the inner surface 46 of the projection 20, and on the other hand with an end face, ie an oriented in the longitudinal direction of the projection 20 surface at the end portion 50 of the porous evaporator medium 24 at.
  • the gap 48 is closed toward the end portion 30, so that no leading to undefined flow conditions Bypassströmungsweg is created.
  • the provision of such a gap 48 has the advantage that the thermal contact of the porous evaporator medium 24 is reduced with the projection 20 and thus the heat loss towards the approach 20 is reduced both in the ignition phase, as well as the annealing of deposits. Furthermore, there is the advantage that the air introduced through the air inlet opening 38, especially at the in Fig. 3 illustrated embodiment variant of the porous evaporator medium 24 can be distributed over the entire space 48 and thus can pass through a much larger area of the porous evaporator medium 24 through this. Thus, even with a fine-pored configuration of the porous evaporator medium 24 due to the larger passage area of the throttle effect can be compensated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
EP06019098.0A 2005-11-22 2006-09-12 Brennkammerbaugruppe für einen Verdampferbrenner Not-in-force EP1788305B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06019098T PL1788305T3 (pl) 2005-11-22 2006-09-12 Zespól komory spalania dla palnika odparowującego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005055642A DE102005055642A1 (de) 2005-11-22 2005-11-22 Brennkammerbaugruppe für einen Verdampferbrenner

Publications (2)

Publication Number Publication Date
EP1788305A1 EP1788305A1 (de) 2007-05-23
EP1788305B1 true EP1788305B1 (de) 2015-12-30

Family

ID=37709541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06019098.0A Not-in-force EP1788305B1 (de) 2005-11-22 2006-09-12 Brennkammerbaugruppe für einen Verdampferbrenner

Country Status (3)

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EP (1) EP1788305B1 (pl)
DE (1) DE102005055642A1 (pl)
PL (1) PL1788305T3 (pl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036637A1 (de) * 2007-08-03 2009-02-05 J. Eberspächer GmbH & Co. KG Zündlufteinlassanordnung für eine Brennkammerbaugruppe eines brennstoffbetriebenen Heizgerätes, insbesondere Fahrzeugheizgerät
DE102007061518A1 (de) 2007-12-20 2009-06-25 J. Eberspächer GmbH & Co. KG Brennkammerbaugruppe für einen Verdampferbrenner, insbesondere für ein Fahrzeugheizgerät
DE102010043222B4 (de) 2010-11-02 2014-02-27 Eberspächer Climate Control Systems GmbH & Co. KG Brennkammerbaugruppe und Zündorgan dafür
JP5203489B2 (ja) * 2011-06-15 2013-06-05 中外炉工業株式会社 燃焼装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61134523A (ja) 1984-12-04 1986-06-21 Matsushita Electric Ind Co Ltd 液体燃料燃焼器の点火装置
DE3708745C1 (de) * 1987-03-18 1988-02-18 Eberspaecher J Mit Brennluft gekuehlte Gluehkerze fuer Heizgeraete
DE4243712C1 (de) 1991-12-14 1994-06-16 Eberspaecher J Heizgerät für Fahrzeuge, das mit flüssigem Brennstoff unabhängig von dem Motor des Fahrzeuges betreibbar ist
DE4328790C2 (de) * 1993-08-26 1999-08-19 Eberspaecher J Gmbh & Co Brenner eines Fahrzeugheizgeräts
DE19507556B4 (de) * 1994-10-20 2004-12-30 J. Eberspächer GmbH & Co. KG Verfahren zum Starten eines Brenners für ein Fahrzeugheizgerät oder einen Partikelfilter-Regenerator
DE10219633C1 (de) * 2002-05-02 2003-12-04 Eberspaecher J Gmbh & Co Verdampferbrenner
DE102005004358A1 (de) * 2005-01-31 2006-08-03 J. Eberspächer GmbH & Co. KG Brennkammerbaugruppe für ein Fahrzeugheizgerät

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Publication number Publication date
DE102005055642A1 (de) 2007-05-24
EP1788305A1 (de) 2007-05-23
PL1788305T3 (pl) 2016-06-30

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